Precisely printed ruling makes this pad ideal for to-scale drafting, planning, engineering & various related technical applications. Low-glare tinted sheets are easier on the eyes, especially under bright lights or in direct sunlight. Sturdy backing allows you to continue perfecting your plans while standing or sitting without access to a stable worksurface. Three-hole punched pad seamlessly inserts into any standard three-ring binder. Pocket-Sized Indicator: N; Pad-Binding Type: Glued / Gummed; Pad-Binding Edge: Top; Number of Subjects / Sections: 1.